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Secret Garage Door Remote 



Make] Projects 

hhiiilH ho/ 1 !/ tuMaal/ chare r\icf*f\\tat* 



build, hack, tweak, share, discover,- 



Secret Garage Door Remote 

Written By: Sean Michael Ragan 



TOOLS: 



PARTS: 



Exacto Knifed) 

Helping hands (1) 

Marker (1) 

Multi-tip screwdriver (1) 

Soldering/desoldering tools (1) 

Wire stripper/crimper (1) 



Pushbutton momentary switch (1) 
45mm or greater without exceeding 
lower diameter of cup. Mine is a "45mm 
HQ Momentary Illuminated Pushbutton 
Switch" from eBay seller "chaudiolab. " 
Illumination is not necessary; I used an 
illuminated button only because the 
biggest pushbuttons I could find on 
eBay, at the best prices, included 
illumination. 

Cup(1) 

The semi-disposable rigid plastic 
"gimme" cups are better for this because 
they will hold up longer. Check the size 
of the cup against your c upholders 
before using. 

Garage Door Remote (1) 

Hookup wire (16") 

• Quick-connect (2) 

Make sure they fit the tabs on the 
pushbutton. 



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Page 1 of 7 



Secret Garage Door Remote 

Foam (12x12") 

Bubble wrap also works. 

• Packing tape (6") 

• Soda lid (1) 
Straw (1) 
Napkin (2-3) 



SUMMARY 

A garage door opener openly displayed inside your car can be an incentive to thieves. 
Documents from the glove compartment are likely to reveal your home address, and with the 
remote in hand a thief can help him- or herself to the contents of your garage, and (if it's an 
attached garage) secure a concealed location from which to attack one of your house's 
exterior doors. Together with other conspicuous valuables, a visible garage remote-say, 
clipped to the sun visor-can make the difference between a thief choosing to break into your 
car and choosing to move on to the next one. 

Sure, you could just pop the remote in the glove compartment when you get out. But having 
it immediately accessible is convenient, and it's easy to forget or get sloppy in your 
concealment habit. 

This easy mod retains all of the convenience of the remote clipped to the visor while 
dispelling most of the risk. The remote button is concealed on the underside of a plastic 
beverage cup that rests in your cup-holder, with the electronics concealed inside the cup. To 
activate the opener, just push down on the top of the cup. From outside of the car (and from 
inside it, too), the remote looks like an empty soda cup you just haven't thrown out yet. 



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Secret Garage Door Remote 



Step 1 — Cut a hole in the bottom of the cup 






• Dismantle the button into its four main components: the button housing, the hex nut, the 
switch itself, and the "ferrule," which is the round thing I'm holding in the picture. 

• To remove the switch itself, hold the button housing stationary while twisting the 
switch counterclockwise as viewed from the back side of the button. To re-install 
the switch, reverse this procedure. 

• Center the ferrule on the underside of the plastic cup and trace around it with a marker 

• Cut out the hole with a hobby knife, leaving about 1/8" inside the black line. 







Step 2 — Install button in cup 




• Insert the button housing from the bottom of the cup. The bezel should sit flush. 

• Reach into the cup and slip the ferrule back around the button housing. 

• Reach into the cup, thread the hex nut around the button housing, and tighten it down 
against the ferrule. The button housing should now be secure inside the cup. 



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Secret Garage Door Remote 



Step 3 — Disassemble garage remote 




• Remove the case. Mine was a snap-together clamshell design that opened easily on prying 
with a flat-blade screwdriver. Yours may have screws you will have to turn out. 

• Remove the circuit board. Mine just lifted out, but again, you may need to remove a screw 
or two. 

• Identify the door button. This should be easy, as there probably will only be one. If not, just 
test them. 



A 



• Use caution, of course, when working on a remote with the battery installed. The 
battery currents and voltages are harmless, but it's likely you'll accidentally activate 
the garage door once or twice. Be sure the area around the door is clear of obstructions, 
children, and pets. 



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Secret Garage Door Remote 



Step 4 — Install pushbutton leads 




• Pick two solder pads attached to the door button. Short them with a small jumper wire and 
verify that the garage door is activated. 

• If you want, it wouldn't be hard to de-solder the remote's factory button from the PCB. I left 
mine in place, to make it easier to restore the remote to its original condition if I want to. 

• Strip both ends of two 8" pieces of -20AWG hookup wire. Solder the leads to the pads you 
tested earlier. 

• Arrange for strain relief on the button leads, so pulling on the wires doesn't rip them off the 
solder pads. My PCB had a handy-dandy hole in the middle of it for indexing to the case, 
so I just tied a couple of loose knots in the button leads and threaded them through it. Now, 
pulling on the leads puts strain on the knots and the board as a whole, rather than the 
relatively fragile solder joints at the pads. 

Step 5 — Pad the PCB 




• Make sure a good battery is installed, and wrap the PCB in nonconducting foam or bubble 
wrap, with the button leads hanging out. 

• Secure the padding with packing tape. 



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Secret Garage Door Remote 



Step 6 — Connect the PCB to the button 




• Crimp a female quick-connect to the bare end of each wire from the PCB. If you don't have 
quick-connects, you can just solder the wires to the switch terminals. 

• Attach the quick-connects to the appropriate terminals on the switch. 

• Bend the quick-connects up at about an 80-degree angle, as shown. This will make it 
easier to fit the switch assembly down in the cup. 

Step 7 — Install PCB in cup 





• Put the switch with the PCB leads attached back into the cup. 

• Insert the switch back into the mounted button housing and twist it clockwise to lock it in 
place. 

• Adjust the position of the PCB "bundle" inside the cup so that the PCB is as close to the 
bottom of the cup as possible. 



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Secret Garage Door Remote 



Step 8 — Finishing touches 




• Wad a couple of napkins and stuff them into the cup on top of the electronics. 

• Snap on the soda lid. 

• Poke a straw through the straw hole and down one side of the cup. 

Step 9 — Use it! 




• Put the cup in your cupholder. The button should rest against the bottom of the cupholder, 
but it should not be heavy enough to activate the button under its own weight. 

• To open or close the garage door, just push down on the top of the cup. 

• Alternately, if your cupholder is too narrow to allow you to push the button in place, you 
can just pick the cup up and bump the button against the center console. 

• I wired up the LED in the pushbutton to show off what was going on in the 
photograph, but there is no practical need for you to do so. I added an additional 9V 
battery in the cup to power the light. 

This document was last generated on 201 2-1 1 -03 05:09:07 PM. 







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